Office chair



FIG. 1 is a perspective view of the office chair;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a top view of FIG. 1; and,

FIG. 7 is a bottom view of FIG. 1.

Any surfaces of the design not shown, including interior surfaces and any surfaces shown in broken lines, form no part of the claimed invention. 

CLAIM I claim the ornamental design for an office chair, as shown and described. 